<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <a href="#anchor1">anchor1</a>
    <div style="height: 10000px; background-color: red"></div>
    <div>
      <a href="#">回到顶部</a>
    </div>
    <div id="anchor1">德玛西亚</div>
  </body>
</html>
